class_name Flashcard
extends Resource

enum QuestionType {
	BASIC,
	MULTIPLE_CHOICE
}

@export var id: String = ""
@export var question_text: String = ""
@export var question_image: String = ""
@export var question_color: Color = Color.WHITE
@export var question_format: String = "plain"

@export var answer_text: String = ""
@export var answer_image: String = ""
@export var answer_color: Color = Color.WHITE
@export var answer_format: String = "plain"

@export var card_type: QuestionType = QuestionType.BASIC

@export var choices: Array[Dictionary] = [] 

@export var tags: Array[String] = []
@export var difficulty: int = 1 
@export var hint: String = ""

func _init() -> void:
	if id == "":
		id = _generate_uuid()

func to_dict() -> Dictionary:
	return {
		"id": id,
		"question": {
			"text": question_text,
			"image": question_image,
			"color": question_color.to_html(),
			"format": question_format
		},
		"answer": {
			"text": answer_text,
			"image": answer_image,
			"color": answer_color.to_html(),
			"format": answer_format
		},
		"type": "basic" if card_type == QuestionType.BASIC else "multiple_choice",
		"choices": choices.duplicate(),
		"metadata": {
			"tags": tags.duplicate(),
			"difficulty": difficulty,
			"hint": hint
		}
	}

func from_dict(data: Dictionary) -> void:
	id = data.get("id", _generate_uuid())

	var question = data.get("question", {})
	question_text = question.get("text", "")
	question_image = question.get("image", "")
	question_color = Color.from_string(question.get("color", "#FFFFFF"), Color.WHITE)
	question_format = question.get("format", "plain")

	var answer = data.get("answer", {})
	answer_text = answer.get("text", "")
	answer_image = answer.get("image", "")
	answer_color = Color.from_string(answer.get("color", "#FFFFFF"), Color.WHITE)
	answer_format = answer.get("format", "plain")

	var type_str = data.get("type", "basic")
	card_type = QuestionType.MULTIPLE_CHOICE if type_str == "multiple_choice" else QuestionType.BASIC

	choices.assign(data.get("choices", []))

	var metadata = data.get("metadata", {})
	tags.assign(metadata.get("tags", []))
	difficulty = metadata.get("difficulty", 1)
	hint = metadata.get("hint", "")

func get_correct_choice_index() -> int:
	for i in range(choices.size()):
		if choices[i].get("is_correct", false):
			return i
	return -1

func _generate_uuid() -> String:
	return "%x%x-%x-%x-%x-%x%x%x" % [
		randi(), randi(), randi(), randi(),
		randi(), randi(), randi(), randi()
	]